"It's about making people aware," Andrews said. "The problem with impeding the [traffic] flow is people tend to make crazy decisions to overtake in areas where you wouldn't ... even sometimes on yellow lines."

"Look behind you [and if] there's 20 cars and there's been provision for you to pull in and let these people pass safely, do so."

While the focus is on safety for the police's summer campaign, slow drivers could be facing $150 fines and the loss of 20 demerit points if they don't let people pass them or refuse to move into a slow vehicle bay.